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import re
from time import clock
from operator import isNumberType
import random
class taLogo: pass
from taturtle import *
procstop = False
class symbol:
def __init__(self, name):
self.name = name
self.nargs = None
self.fcn = None
def __str__(self): return self.name
def __repr__(self): return '#'+self.name
class logoerror(Exception):
def __init__(self, value):
self.value = value
def __str__(self):
return repr(self.value)
def run_blocks(lc, spr, blocks):
lc.stacks['stack1'] = None
lc.stacks['stack2'] = None
for i in blocks:
if i.proto.name=='hat1': lc.stacks['stack1']= readline(lc,blocks_to_code(i))
if i.proto.name=='hat2': lc.stacks['stack2']= readline(lc,blocks_to_code(i))
code = blocks_to_code(spr)
print code
setup_cmd(lc, code)
def blocks_to_code(spr):
if spr==None: return ['%nothing%']
code = []
dock = spr.proto.docks[0]
if len(dock)>4: code.append(dock[4])
if spr.proto.primname != '': code.append(spr.proto.primname)
else: code.append(float(spr.label))
for i in range(1,len(spr.connections)):
b = spr.connections[i]
dock = spr.proto.docks[i]
if len(dock)>4:
for c in dock[4]: code.append(c)
if b!=None: code.extend(blocks_to_code(b))
elif spr.proto.docks[i][0] not in ['flow','numend','unavailable','logi-']:
code.append('%nothing%')
return code
def intern(lc, str):
if str in lc.oblist: return lc.oblist[str]
sym = symbol(str)
lc.oblist[str] = sym
return sym
def parseline(str):
split = re.split(r"\s|([\[\]()])", str)
return [x for x in split if x and x != ""]
def readline(lc, line):
res = []
while line:
token = line.pop(0)
if isNumberType(token): res.append(token)
elif token.isdigit(): res.append(float(token))
elif token[0]=='-' and token[1:].isdigit(): res.append(-float(token[1:]))
elif token[0] == '"': res.append(token[1:])
elif token == '[': res.append(readline(lc,line))
elif token == ']': return res
else: res.append(intern(lc, token))
return res
def setup_cmd(lc, str):
stopsignon(lc); lc.procstop=False
list = readline(lc, str)
lc.step = start_eval(lc, list)
def start_eval(lc, list):
icall(lc, evline, list); yield True
yield False
def evline(lc, list):
oldiline = lc.iline
lc.iline = list[:]
lc.arglist = None
while lc.iline:
token = lc.iline[0]
if token==lc.symopar: token=lc.iline[1]
icall(lc, eval); yield True
if lc.procstop: break
if lc.iresult==None: continue
raise logoerror("You don't say what to do with %s" % token)
lc.iline = oldiline
ireturn(lc); yield True
def eval(lc, infixarg=False):
token = lc.iline.pop(0)
if type(token) == lc.symtype:
icall(lc, evalsym, token); yield True
res = lc.iresult
else: res = token
if not infixarg:
while infixnext(lc):
icall(lc, evalinfix, res); yield True
res = lc.iresult
ireturn(lc, res); yield True
def evalsym(lc, token):
undefined_check(lc, token)
oldcfun, oldarglist = lc.cfun, lc.arglist
lc.cfun, lc.arglist = token, []
for i in range(token.nargs):
no_args_check(lc)
icall(lc, eval); yield True
lc.arglist.append(lc.iresult)
if lc.cfun.rprim:
if type(lc.cfun.fcn)==lc.listtype: icall(lc, ufuncall, cfun.fcn); yield True
else: icall(lc, lc.cfun.fcn, *lc.arglist); yield True
result = None
else: result = lc.cfun.fcn(lc, *lc.arglist)
lc.cfun, lc.arglist = oldcfun, oldarglist
if lc.arglist!=None and result==None:
raise logoerror("%s didn't output to %s" % (oldcfun.name, lc.cfun.name))
ireturn(lc, result); yield True
def evalinfix(lc, firstarg):
token = lc.iline.pop(0)
oldcfun, oldarglist = lc.cfun, lc.arglist
lc.cfun, lc.arglist = token, [firstarg]
no_args_check(lc)
icall(lc, eval,True); yield True
lc.arglist.append(lc.iresult)
result = lc.cfun.fcn(lc,*lc.arglist)
lc.cfun, lc.arglist = oldcfun, oldarglist
ireturn (lc,result); yield True
def infixnext(lc):
if len(lc.iline)==0: return False
if type(lc.iline[0])!=lc.symtype: return False
return lc.iline[0].name in ['+', '-', '*', '/','%','and','or']
def undefined_check(lc, token):
if token.fcn != None: return False
raise logoerror("I don't know how to %s" % token.name)
def no_args_check(lc):
if lc.iline and lc.iline[0]!=lc.symnothing : return
raise logoerror("Not enough inputs to %s" % lc.cfun.name)
def prim_wait(lc,time):
setlayer(lc.tw.turtle.spr,630)
endtime = millis()+an_int(lc,time)*100
while millis()<endtime:
yield True
setlayer(lc.tw.turtle.spr,100)
ireturn(lc); yield True
def prim_repeat(lc, num, list):
num = an_int(lc, num)
for i in range(num):
icall(lc, evline, list[:]); yield True
if lc.procstop: break
ireturn(lc); yield True
def prim_forever(lc, list):
while True:
icall(lc,evline, list[:]); yield True
if lc.procstop: break
ireturn(lc); yield True
def prim_if(lc, bool, list):
if bool: icall(lc, evline, list[:]); yield True
ireturn(lc); yield True
def prim_ifelse(lc, bool, list1,list2):
if bool: ijmp(lc, evline, list1[:]); yield True
else: ijmp(lc, evline, list2[:]); yield True
def prim_opar(lc,val):
lc.iline.pop(0)
return val
def prim_define(name, body):
if type(name) != symtype: name = intern(name)
name.nargs, name.fcn = 0, body
name.rprim = True
def prim_stack1(lc):
if lc.stacks['stack1']==None: raise logoerror("stack1 undefined")
icall(lc, evline, lc.stacks['stack1'][:]); yield True
lc.procstop = False
ireturn(lc); yield True
def prim_stack2(lc):
if lc.stacks['stack2']==None: raise logoerror("stack2 undefined")
icall(lc, evline, lc.stacks['stack2'][:]); yield True
lc.procstop = False
ireturn(lc); yield True
def prim_stopstack(lc):
lc.procstop = True
def ufuncall(body):
ijmp(evline, body); yield True
def an_int(lc, n):
try: return int(n)
except: raise logoerror("%s doesn't like %s as input" % (lc.cfun.name, str(n)))
def a_float(n):
try: return int(n)
except: raise logoerror("%s doesn't like %s as input" % (cfun.name, str(n)))
def defprim(lc, name, args, fcn, rprim=False):
sym = intern(lc, name)
sym.nargs, sym.fcn = args,fcn
sym.rprim = rprim
def lcNew(tw):
lc = taLogo()
lc.tw = tw
lc.oblist = {}
defprim(lc,'print', 1, lambda lc,x: showlabel(lc,int(float(x)*10)/10.))
# defprim(lc,'print', 1, lambda lc,x: tyo(int(float(x)*10)/10.))
defprim(lc,'+', None, lambda lc,x,y:x+y)
defprim(lc,'-', None, lambda lc,x,y:x-y)
defprim(lc,'*', None, lambda lc,x,y:x*y)
defprim(lc,'/', None, lambda lc,x,y:x/y)
defprim(lc,'random', 2, lambda lc,x,y: int(random.uniform(x,y)))
defprim(lc,'greater?', 2, lambda lc,x,y: float(x)>float(y))
defprim(lc,'less?', 2, lambda lc,x,y: float(x)<float(y))
defprim(lc,'equal?', 2, lambda lc,x,y: float(x)==float(y))
defprim(lc,'and', None, lambda lc,x,y:x&y)
defprim(lc,'or', None, lambda lc,x,y:x|y)
defprim(lc,'not', 1, lambda lc,x:not x)
defprim(lc,'%', None, lambda lc,x,y:x%y)
defprim(lc,'clean', 0, lambda lc: clearscreen(lc.tw.turtle))
defprim(lc,'forward', 1, lambda lc, x: forward(lc.tw.turtle, x))
defprim(lc,'back', 1, lambda lc,x: forward(lc.tw.turtle,-x))
defprim(lc,'seth', 1, lambda lc, x: seth(lc.tw.turtle, x))
defprim(lc,'right', 1, lambda lc, x: right(lc.tw.turtle, x))
defprim(lc,'left', 1, lambda lc,x: right(lc.tw.turtle,-x))
defprim(lc,'heading', 0, lambda lc: lc.tw.turtle.heading)
defprim(lc,'setxy', 2, lambda lc, x, y: setxy(lc.tw.turtle, x, y))
defprim(lc,'arc', 2, lambda lc, x, y: arc(lc.tw.turtle, x, y))
defprim(lc,'xcor', 0, lambda lc: lc.tw.turtle.xcor)
defprim(lc,'ycor', 0, lambda lc: lc.tw.turtle.ycor)
defprim(lc,'pendown', 0, lambda lc: setpen(lc.tw.turtle, True))
defprim(lc,'penup', 0, lambda lc: setpen(lc.tw.turtle, False))
defprim(lc,'(', 1, lambda lc, x: prim_opar(lc,x))
defprim(lc,'setcolor', 1, lambda lc, x: setcolor(lc.tw.turtle, x))
defprim(lc,'setshade', 1, lambda lc, x: setshade(lc.tw.turtle, x))
defprim(lc,'setpensize', 1, lambda lc, x: setpensize(lc.tw.turtle, x))
defprim(lc,'fillscreen', 2, lambda lc, x, y: fillscreen(lc.tw.turtle, x, y))
defprim(lc,'color', 0, lambda lc: lc.tw.turtle.color)
defprim(lc,'shade', 0, lambda lc: lc.tw.turtle.shade)
defprim(lc,'pensize', 0, lambda lc: lc.tw.turtle.pensize)
defprim(lc,'wait', 1, prim_wait, True)
defprim(lc,'repeat', 2, prim_repeat, True)
defprim(lc,'forever', 1, prim_forever, True)
defprim(lc,'if', 2, prim_if, True)
defprim(lc,'ifelse', 3, prim_ifelse, True)
defprim(lc,'stopstack', 0, prim_stopstack)
defprim(lc,'stack1', 0, prim_stack1, True)
defprim(lc,'stack2', 0, prim_stack2, True)
defprim(lc,'box1', 0, lambda lc: lc.boxes['box1'])
defprim(lc,'box2', 0, lambda lc: lc.boxes['box2'])
defprim(lc,'storeinbox1', 1, lambda lc,x: setbox(lc, 'box1',x))
defprim(lc,'storeinbox2', 1, lambda lc,x: setbox(lc, 'box2',x))
defprim(lc,'define', 2, prim_define)
defprim(lc,'nop', 0, lambda lc: None)
defprim(lc,'start', 0, lambda: None)
lc.symtype = type(intern(lc, 'print'))
lc.numtytpe = type(0.)
lc.listtype = type([])
lc.symnothing = intern(lc, '%nothing%')
lc.symopar = intern(lc, '(')
lc.istack = []
lc.stacks = {}
lc.boxes = {'box1': 0, 'box2': 0}
lc.iline, lc.cfun, lc.arglist, lc.ufun = None, None, None,None
lc.stopsign = tw.toolsprs['stopit']
return lc
def doevalstep(lc):
starttime = millis()
try:
while (millis()-starttime)<120:
if not lc.step.next(): stopsignoff(lc); return False
except logoerror, e: showlabel(lc, str(e)[1:-1]); stopsignoff(lc); return False
return True
def icall(lc, fcn, *args):
lc.istack.append(lc.step)
lc.step = fcn(lc, *(args))
def ireturn(lc, res=None):
lc.step = lc.istack.pop()
lc.iresult = res
def ijmp(lc, fcn, *args):
lc.step = fcn(lc,*(args))
def showlabel(lc,l):
setlabel(lc.tw.status_spr,l)
setlayer(lc.tw.status_spr,710);
def stopsignon(lc):
setshape(lc.stopsign, lc.stopsign.onshape)
setlayer(lc.tw.turtle.spr,100)
def stopsignoff(lc):
setshape(lc.stopsign, lc.stopsign.offshape)
setlayer(lc.tw.turtle.spr,630)
def stop_logo(tw): tw.lc.step = just_stop()
def just_stop(): yield False
def setbox(lc, name,val): lc.boxes[name]=val
def tyo(n): print n
def millis(): return int(clock()*1000)
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